128844260961471 has 96 divisors (see below), whose sum is σ = 220281406924800. Its totient is φ = 71718312695040.

The previous prime is 128844260961463. The next prime is 128844260961473. The reversal of 128844260961471 is 174169062448821.

128844260961471 is a `hidden beast` number, since 1 + 2 + 8 + 8 + 4 + 4 + 2 + 6 + 0 + 9 + 614 + 7 + 1 = 666.

It is not a de Polignac number, because 128844260961471 - 2³ = 128844260961463 is a prime.

It is a super-3 number, since 3×128844260961471³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128844260961399 and 128844260961408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128844260961473) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15936690 + ... + 22620048.

It is an arithmetic number, because the mean of its divisors is an integer number (2294597988800).

Almost surely, 2^{128844260961471} is an apocalyptic number.

128844260961471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

128844260961471 is a deficient number, since it is larger than the sum of its proper divisors (91437145963329).

128844260961471 is a wasteful number, since it uses less digits than its factorization.

128844260961471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6683709 (or 6683706 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 128844260961471 in words is "one hundred twenty-eight trillion, eight hundred forty-four billion, two hundred sixty million, nine hundred sixty-one thousand, four hundred seventy-one".